dev_1.0.0_xuxt_2 更新反向代理，打包镜像，以及README文档 (#28)

Co-authored-by: xiuting.xu <xiutingxt.xu@gmail.com>
Reviewed-on: #28
Reviewed-by: yuyr <yuyr@zgclab.edu.cn>
Reviewed-by: huhy <husteryezi@163.com>
Reviewed-by: sundapeng <sundp@mail.zgclab.edu.cn>

src/web/build_tools/proxy/nginx.conf.template

@@ -5,14 +5,6 @@ events {
     worker_connections  1024;
 }
 
-server {
-    listen 80 default_server;
-    server_name _;
-
-    location / {
-        proxy_pass http://web.argus.com:80;
-    }
-}
 
 http {
     include       mime.types;
@@ -32,5 +24,16 @@ http {
     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
     proxy_set_header X-Forwarded-Proto $scheme;
 
+    server {
+        listen 80 default_server;
+        server_name _;
+
+        location / {
+            set $web_backend http://web.argus.com:8080;
+            proxy_pass $web_backend;
+        }
+    }
+
+
     include /etc/nginx/conf.d/*.conf;
 }